14 Mr. Nicholson on the 



air becomes rose-red ; it is very soluble in fether, alcohol, and 

 water ; in the latter Avith decomposition, the common phos- 

 phate being produced. 



Analysis. 



When burnt with oxide of copper — 



I. 0'45G grm. of the substance gave 0'633 grm. of carbonic 

 acid and 0'223 grm. of water. 



II. 0"403 grm. neutralized with ammonia and precipitated 

 with nitrate of silvci', gave 0"880 grm. of tribasic phosphate 

 of silver. 



These numbers correspond to the following per-cents. : — 



I. II. 



Carbon 37-86 ' 



Hydrogen .... 5*44 



Phosphoric acid 37'12 



These determinations lead to the formula 

 HO, CjoH^N, 2HO, PO5, 

 as is seen by the following : — 



12 eqs. Carbon 900-00 



10 ... Hydrogen . . . . 125-00 

 1 ... Nitrogen .... 177-05 

 3 ... Oxygen .... 300-00 

 1 ... Phosphoric acid . . 892-28 

 1 ... Phosphate of aniline 2394-33 100-00 

 This salt corresponds to the biphosphate of soda, 



NaO, 2HO, PO5. 

 Mitscherlich has analysed an ammonia compound of the 

 same constitution. 



I did not succeed in forming a phosphate in which the 

 three equivalents of water in the hydrate ai'e replaced by three 

 equivalents of aniline. On adding aniline in excess to an al- 

 coholic solution of the common phosphate, the base did not 

 combine, and the common phosphate remained. I also tried 

 to produce it by decomposing the j)hosphate with three equi- 

 valents of soda by oxalate of aniline ; aniline however was in- 

 stantly set free in the form of oily globules, and the common 

 phosphate was produced with oxalate of soda. 



I have not been more successful in endeavouring to prepare 

 phosphates, into which aiiiline enters beside fixed bases. I 

 have tried to obtain a salt corresponding to phosphorus salt, 



NaO, NH4O, HO, PO5, 

 by dissolving aniline in a solution of phosphate of soda with 

 one equivalent of fixed base. The crystals, however, which 



